pgpt10

let playerLayer = AVPlayerLayer(player: player)
playerLayer.frame = self.videoView.bounds //bounds of the view in which AVPlayer should be displayed
playerLayer.videoGravity = .resizeAspect

pgpt10

let asset = AVAsset(url: url)
let playerItem = AVPlayerItem(asset: asset)
let player = AVPlayer(playerItem: playerItem)

pgpt10

class DynamicHeightCollectionView: UICollectionView {
  override func layoutSubviews() {
    super.layoutSubviews()
    if!__CGSizeEqualToSize(bounds.size,self.intrinsicContentSize){
      self.invalidateIntrinsicContentSize()
    }
  }
  override var intrinsicContentSize: CGSize {
    return contentSize
  }

pgpt10

var arr1 = ["Mumbai", "Bangalore"]
var arr2 = arr1

print(address(of: arr1))  //0x608000092e50
print(address(of: arr2))  //0x608000092e50

arr2[0] = "Jaipur"

print(address(of: arr1))  //0x608000092e50
print(address(of: arr2))  //0x608000092ea0

pgpt10

var arr1 = [Address("Mumbai"), Address("Bangalore")]
var arr2 = arr1

pgpt10

class Address: Codable
{
    var city: String?
    init(_ city: String?)
    {
        self.city = city
    }
}

var arr1 = [Address("Mumbai"), Address("Bangalore")]

pgpt10

class Person: NSObject, NSCopying
{
    var name: String?
    var address: Address?
    
    init(_ name: String?, _ address: Address?)
    {
        self.name = name
        self.address = address
    }

pgpt10

class Address: NSObject, NSCopying
{
    var city: String?    
    init(_ city: String?)
    {
        self.city = city
    }
    
    func copy(with zone: NSZone? = nil) -> Any
    {

pgpt10

class Address
{
    var city: String?
    init(_ city: String?)
    {
        self.city = city
    }
}

var a1 = Address("Mumbai")

pgpt10

var arr1 = ["John", "Stefen", "Caroline"]
var arr2 = arr1

print(arr1)  //John, Stefen, Caroline
print(arr2)  //John, Stefen, Caroline

arr2.removeLast()
arr2[0] = "Maddy"

print(arr1)  //John, Stefen, Caroline